View Compilation Error

0_0_31343934_6313.c: In function 'main':
0_0_31343934_6313.c:9:6: error: expected expression before '/' token
      //if(j) printf(" "); 
      ^
0_0_31343934_6313.c:20:7: error: expected expression before '/' token
       //if(j) printf(" ");
       ^